C111123313331323113313331333133313231333132311312111133133313113313121333131   >>    C11112331333132311331333133313331323133313231131211113313331311331312133313   <<    C111123313331323113313331333133313231333132311312111133133313113313121333133   >>      C111123313331323113313331333133313231333132311312111133133313113313121333132   >>